This stainless steel pump is designed for dispensing directly from a standard shallow fountain jar. This pump with your jar can be dropped into a countertop cutout and also works great in an insulated serving bar (available to hold 2, 3 or 4 pumps). Fountain jar sold separately.The pump dispenses a 1 oz (30 mL) serving per stroke with the option to reduce the portion size in 1/8 oz (3.7 mL) increments, using the supplied gauging collars. Black knobs are standard.Standard Features: